Thin-type blower of heated air

ABSTRACT

A thin-type blower of heated air relates to air regulation device. It comprises a base and a shell installed on the base, and fans, electric component and heating component mounted inside the shell; an air outlet and an air inlet are mounted in front and in rear of the shell; said heating component (is situated in said air outlet; said shell appears in flat case form; said fans inside the shell constitute a fan-module including—thin-type axial fans, the thin-type axial fan further comprises radial-inlet impeller and thin-type motor, the motor is covered up closely by the hub of the radial-inlet impeller, ensuring the fixed connection between the radial-inlet impeller and the rotation part of the motor. Compared with the prior art, the said thin-type blower features low thickness, smart volume, light weight, low material consumption and low cost.

TECHNICAL FIELD

The present utility model relates to air regulation device, moreespecially, to blower of heated air with thin-type structure.

BACKGROUND ART

blower of heated air with the present technology drives the air by thefan to enable the running air to pass through the heating component inthe blower, finally to flow out of the blower in hope of raising the airtemperature and for the purpose of heating. To achieve the heatingeffect to some extent, the air speed and the volume of the fan must beup to a set point; in other words, must have a set power, the size ofthe fan is the decisive factor determining the size of the whole unit ofthe blower. The existing blower of heated air, even for a minimumcompact-type blower of heated air, has at least 10 watts of fan power,over 50 mm of axial size and large size of diameter. The existing blowerof heated air uses an AC motor to drive the air to flow (the warm airblower for field use is not included in the type indicated herein).Moreover, the existing blower of heated air uses inner rotor motor withthe impellers and the stators separating in the axial direction.Therefore, the axial sizes of the blower are high. Limited by the sizesof the blower, the sizes of this type of warm air blower are very big,the thickness is over 100 mm mostly, plastic and metal materials areconsumed a lot, the consumption of the copper line for AC motor isenormous and the power consumption of the motor is very high; thedramatic consumption of the resources restricts the development of thenational economy. Furthermore, the large material consumption heightensthe manufacturing cost, further brings a heavy burden to customers. Onthe other, hand, the control performance of the AC motor is poor and thespeed variation difficult. Generally, the AC motors for householdappliances can only realize three-stage speed regulation; they aredifficult to achieve step-free speed regulation. An AC motor uses 220Vmunicipal power and the security cannot be guaranteed, so insulation andsafety protection measures must be adopted, thus further increasing thecost.

In the existing technology, there is a small-power thin-type axial fan,wherein its motor is a permanent-magnet outer-rotor type DC brushlessmotor. It is often used as the cooling blower for computer mainframesand instruments as well as in meters, see FIG. 4. This kind of productsmartly enables the inner hole of the radial-inlet impeller, that is,the hub covers up the outer-rotor magnetic ring of the motor directly,and in this way make the axial thickness of the impeller overlap withthe axial length of the motor, reducing the axial sizes of the fan. Thiskind of cooling fan is also driven by flat type AC motor, but this ACmotor is low in power presently. The power of the heating component ofthe warm air blower applying this kind of fan is difficult to be over1300 W, so the performance is poor and it has been eliminated.

SUMMARY OF THE UTILITY MODEL

The present utility model aims at providing a thin-type blower of heatedair featuring low thickness, smart volume, light weight, low materialconsumption and low cost through avoiding the defects in theabovementioned existing technology.

To address the technical problems, the present utility model can takethe following technical solution:

Design and use a thin-type blower of heated air, comprising a base and ashell installed on the base, and fans, electric component and heatingcomponent mounted inside the shell; an air outlet and an air inlet aremounted in front and in rear of the shell; said heating component issituated in said air outlet; said shell appears in flat case form; saidfans inside the shell constitute a fan-module including thin-type axialfans, the thin-type axial fan further comprises radial-inlet impellerand thin-type motor, the motor is covered up closely by the hub of theradial-inlet impeller, ensuring the fixed connection between theradial-inlet impeller and the rotation part of the motor.

The said fan-module includes at least two sets of thin-type axial fanelectrically in parallel or in series connection, the various thin-typeaxial fans are distributed on a plane or on two planes and respectivelyintersecting to form an obtuse angle. To accommodate the needs ofpersonal use, the fan component can also use a thin-type axial fan.

The thin-type axial fans are distributed in a line or matrix.

In the present utility model, the thin-type motor can be an outer-rotormotor or inner-rotor motor: 1. When the thin-type motor is theouter-rotor motor, the hub of the radial-inlet impeller directly coversup the outer rotor of the outer-rotor motor and forms a whole with thesame axis. The thin-type motor can be an outer-rotor permanent-magnetbrushless DC motor or an outer-rotor AC motor. 2. When the thin-typemotor is inner-rotor motor, the hub of the radial-inlet impeller isfixed at the end of the output axis of the inner-rotor motor, and coversup the stator shell of the inner-rotor motor with radial clearance beingreserved. The inner-rotor motor is driven by DC or AC power.

As a further improvement of the present utility model, comprising ashell swing mechanism is set inside the base; the swing mechanismcomprises a rotation axis fixed at the lower end of the shell, a pinionfixed on the rotation axis in a sleeve way, a speed reductionsynchronous motor installed in the base and an centrifugal wheel fixedon the output axis of the motor, and shift fork rack; the shift forkrack comprises rack and shift fork; the centrifugal wheel is situated inthe shift fork and the pinion and the rack are joggled.

As another further improvement of the present utility model, comprisinga swing lamina-unit and cam sliding block mechanism set in front of theshell; the cam sliding block mechanism includes synchronous motor,centrifugal wheel and sliding block; the centrifugal wheel and thesynchronous motor are connected fixedly, sliding groove is opened in thesliding block and the centrifugal wheel is mounted inside the slidinggroove and cooperates with it movably; various swing laminas of theswing lamina-unit connect the sliding block in aid of a small pin axis.

Compared with the existing technology, the present utility model has thefollowing favorable effects: 1. The fan component is the core part ofthe warm air blower; the thickness and magnitude play a decisive role inthe entire unit size, weight and material consumption of air regulationdevice; the present utility model adopts a fan component of at least twothin type axial flow fans connected in parallel or series electricallyincluded, much smaller in axial sizes compared with the single fan isused. In this way, the volume of the warm air blower is of the samespecifications, i.e., the same air output lessens substantially, and theweight reduces dramatically; correspondingly, the consumption of plasticand metal materials for the fittings of the product shell has a largereduction, the manufacturing cost of the product is decreased and socialresources are saved, thus the national economy has a growth. Meanwhile,the small volume and lightweight unit also reduces expenses for storageand transportation; 2. The present utility model adopts permanent-magnetbrushless DC motor, efficiency is increased compared with the existingwarm air blower using AC motor, thus reducing power consumption; 3. Byadopting permanent-magnet brushless DC motor for the present utilitymodel, a large amount of strategic resources can be saved: theconsumption of steel and copper materials for the brushless DC motor hasa high reduction comparing with the AC motor; 5. The permanent-magnetbrushless DC motor adopted by the present utility model uses DC powersupply much lower than the extremely low safety voltage 42V, thus thesecurity of the motor is enhanced.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is the structural sketch of side and sectional view through fanaxis of positive projection for Embodiment 1 for the thin-type blower ofthe present utility model;

FIG. 2 is the structural sketch of the front view of positive projectionfor Embodiment 1 of the thin-type blower;

FIG. 3 the structural sketch of the axial projection for Embodiment 1 ofthe thin-type blower;

FIG. 4 is the enlarged structural sketch of side and sectional view ofthe single outer rotor axial flow fan used in Embodiment 1 for thethin-type blower;

FIG. 5 is the structural sketch of side and sectional view through fanaxis of positive projection for Embodiment 2 for the thin-type blower ofthe present utility model;

FIG. 6 is the enlarged structural sketch of side and sectional view ofthe single inner rotor axial flow fan used in Embodiment 2 for thethin-type blower;

FIG. 7 is the structural sketch of side and sectional view through fanaxis of positive projection for Embodiment 3 for the thin-type blower ofthe present utility model;

FIG. 8 is the enlarged structural sketch of front view of positiveprojection for Embodiment 4 for the thin-type blower of the presentutility model;

FIG. 9 is the structural sketch of the front view of positive projectionfor Embodiment 4 for the thin-type blower of the present utility model;

FIG. 10 is the structural sketch of the front view of positiveprojection for Embodiment 5 for the thin-type blower of the presentutility model.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present utility model is further detailed in combination with theoptimal embodiments shown in the drawings hereinafter:

Embodiment 1

Embodiment 1 of the thin-type blower for the present utility model, asshown in FIG. 1 to FIG. 4, comprising a base 10 and a shell 20 installedon the base, and fans, electric component 80 and heating component 90mounted inside the shell 20; the heating component 90 is set in front ofthe fan; an air outlet 22 and an air inlet 21 are mounted in front ofand in rear of the shell 20; the shell 20 appears in flat case form; thefan constitute a fan-module 30 including four sets of thin-type axialfans 31 electrically in parallel or in series connection; the variousthin-type axial fans 31 are distributed on a plane in matrix layout;they all include radial-inlet impeller 311 and outer-rotor motor 312,they can adopt same power or different power, as shown in FIG. 4, thehub 3111 of the radial-inlet impeller 311 and the outer-rotorpermanent-magnet ring 3121 of the outer-rotor motor 312 are fixed intoan integration; a protection net 221 is installed inside the air outlet22 in front of the shell and a dust prevention net 211 is installedinside the rear air inlet 21. The outer-rotor motor 312 ispermanent-magnet brushless DC motor, its driving power is DC power below42V and single unit power is less than 10 Watts. According to differentuser requirements, the outer-rotor motor can be also driven by AC power.Over the recent years, the technology of the outer-rotor AC motor hasmatured. The heating component 90 is PTC resistance element of positivetemperature coefficient sold in the market, can also be electro-thermalthread, or can be metal electro-thermal tube with radiation wing flake,etc. the existing electrothermal elements. The operations of fan andelectro-thermal component are controlled and provided for power byelectric component 80.

The working principles and the basic components of the embodiment areapproximately the same as the warm air blower with existing technology.The differences lie in that the heavy single AC fan inside the warm airblower is replaced by a small-sized portable thin type axial flow DC fancomponent, in this way reducing the volume and weight of machine body,saving materials and decreasing energy consumption.

Embodiment 2

Embodiment 2 of the thin-type blower for the present utility model, asshown in FIG. 5, it is basically the same to Embodiment 1 and the maindifferences lie in that: the protection net 221 in front of the shell inEmbodiment 1 is changed into swing lamina-unit 60; the upper and thelower ends of various swing laminas for the swing lamina-unit 60 can beconnected in a rotating way in aid of pin axis and the shell 20,meanwhile cam sliding block mechanism 40 driving the swing lamina-unit60 is equipped; the cam sliding block mechanism 40 includes synchronousmotor 41, centrifugal wheel 42 and sliding block 43; the centrifugalwheel 42 and the output axis of the synchronous motor 41 are connectedfixedly, sliding groove is opened in the sliding block 43, thecentrifugal wheel 42 is mounted inside the sliding groove and cooperateswith it movably; various swing laminas of the swing lamina-unit 60connects the sliding block 43 in aid of a small pin axis 62. When thesynchronous motor 41 rotates, the output axis drives the centrifugalwheel 42 to rotate, then further drives the sliding block 43 to maketo-and-fro movement, and then drives various swing laminas of the swinglamina-unit 60 through a small pin axis 62 to make to-and-fro movement.Another difference between this embodiment and Embodiment 1 is: themotor of the thin-type axial fan 31 adopts inner-rotor motor 313, therotor 3131 rotates in the center of the unmovable stator 3132, the hub3111 of the radial-inlet 311 is fixed at the output axis end of themotor rotor 3131, and covers the stator 3132 shell of the inner-rotormotor 313 with clearance being reserved, as shown in FIG. 6, thus thestructure can also reduce the axial sizes. Similarly, the inner-rotormotor can be also driven by DC or AC power.

Embodiment 3

Embodiment 3 of the thin-type blower for the present utility model, asshown in FIG. 7 and FIG. 8, it is basically the same to Embodiment 1 andthe differences lie in that: in this embodiment, the base 10 and shell20 are connected in a relative rotating way, further comprising shellswing mechanism 50 set inside the base 10; the swing mechanism 50comprises a rotation axis 51 fixed at the lower end of the shell 20, apinion 52 fixed on the rotation axis 51 in a sleeve way, a speedreduction synchronous motor 54 installed in the base 10 and ancentrifugal wheel 55 fixed on the output axis of the motor 54, and shiftfork rack 53; the rotation axis 51 is inserted in the hole in the base10 movably, the shift fork rack 53 includes rack 531 and shift fork 532;the centrifugal wheel 55 is situated in the shift fork 53; the pinion 52and the rack 531 are joggled. The speed reduction synchronous motor 54drives the rotation of the centrifugal wheel 55, while the centrifugalwheel 55 and the shift fork 532 of the shift fork rack 53 are joggled;when it rotates, the shift fork rack 531 is driven to make to-and-fromovement; the shift fork rack 531 further drives the pinion 52 to maketo-and-fro rotation, thus realizing to-and-fro rotation of the shell 20.As an equivalent replacement, common technicians in this art are easy toset the shell swing mechanism in the shell so as to realize therelatively to-and-fro rotation between the shell and the base.

Another difference between this embodiment and Embodiment 1 is that thefan component 30 is two sets of thin-type axial fan 31 distributed inthe upper and lower rows in a line.

Embodiment 4

Embodiment 4 of the thin-type blower for the present utility model, asshown in FIG. 9, it is basically the same to Embodiment 1 and thedifferences only lie in that: the fan component 30 is to adopt threesets of thin type axial fan 31, and they are distributed on a plane inthe upper and lower rows in a line.

Embodiment 5

Embodiment 5 of the thin-type blower for the present utility model, asshown in FIG. 10, the embodiment is a special example; the fan component30 only includes a thin type axial fan 31. Other structures arebasically the same to Embodiment 1.

1. A thin-type blower of heated air, comprising a base Hand a shellinstalled on the base, and fans, electric component and heatingcomponent mounted inside the shell; an air outlet and an air inlet aremounted in front and in rear of the shell; said heating component issituated in said air outlet; characterized in that: said shell appearsin flat case form; said fans inside the shell constitute a fan-moduleincluding—thin-type axial fans, the thin-type axial fan furthercomprises radial-inlet impeller and thin-type motor, the motor iscovered up closely by the hub of the radial-inlet impeller, ensuring thefixed connection between the radial-inlet impeller and the rotation partof the motor.
 2. A thin-type blower of heated air according to claim 1,being characterized in that: the said fan-module includes at least twosets of thin-type axial fan electrically in parallel or in seriesconnection, the various thin-type axial fans are distributed on a planeor on two planes and respectively intersecting to form an obtuse angle.3. A thin-type blower of heated air according to claim 2, beingcharacterized in that: the ultra-thin type axial fans are distributed inline or in a matrix.
 4. A thin-type blower of heated air according toany one of claim 1, being characterized in that: the said thin-typemotor is outer-rotor motors, the hub of the radial-inlet impellerdirectly covers up closely the outer rotor of the outer-rotor motor andforms a whole with the same axis.
 5. A thin-type blower of heated airaccording to claim 4, being characterized in that: said thin-type motoris outer-motor permanent-magnet brushless DC motor or outer-rotor ACmotor.
 6. A thin-type blower of heated air according to claim 1, beingcharacterized in that: said thin-type motor is an inner-rotor motor,said hub of the radial-inlet—impeller is fixed at the end of the outputaxis of the inner-rotor motor, and covers up the stator shell of theinner-rotor motor with radial clearance being reserved.
 7. A thin-typeblower of heated air according to claim 6, being characterized in that:said inner rotor motor is driven by DC or AC power.
 8. A thin-typeblower of heated air according to claim 1, being characterized in that:further comprises a shell swing mechanism set inside the base; the swingmechanism comprises a rotation axis fixed at the lower end of the shella pinion fixed on the rotation axis in a sleeve way a speed reductionsynchronous motor installed in the base and an centrifugal wheel fixedon the output axis of the motor, and shift fork rack; the shift forkrack comprises rack and shift fork; said centrifugal wheel is situatedin the shift fork and the pinion and the rack are joggled.
 9. Athin-type blower of heated air according to claim 1, being characterizedin that: further comprises a swing lamina-unit and cam sliding blockmechanism set in front of the shell; the cam sliding block mechanismincludes synchronous motor, centrifugal wheel and sliding block; thecentrifugal wheel and the synchronous motor are connected fixedly,sliding groove is opened in the sliding block and the centrifugal wheelis mounted inside the sliding groove and cooperates with it movably;various swing lamina of the swing lamina-unit connects the sliding blockin aid of a small pin axis.